package com.bwie.netty.server;

import com.bwie.netty.handler.WebSocketHandler;
import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.Channel;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.ChannelPipeline;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.group.ChannelGroup;
import io.netty.channel.group.DefaultChannelGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.SocketChannel;
import io.netty.channel.socket.nio.NioServerSocketChannel;
import io.netty.handler.codec.http.HttpObjectAggregator;
import io.netty.handler.codec.http.HttpServerCodec;
import io.netty.handler.codec.http.websocketx.WebSocketServerProtocolHandler;
import io.netty.handler.stream.ChunkedWriteHandler;
import io.netty.util.concurrent.GlobalEventExecutor;

import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;

/**
 * 云计算-维度健康-08-在线接诊
 */
public class IMServer {

    public static final Map<String, Channel> USERS = new ConcurrentHashMap<>(1024);

    public static final ChannelGroup GROUP=new DefaultChannelGroup(GlobalEventExecutor.INSTANCE);

    public static void start() throws InterruptedException {
        EventLoopGroup boss = new NioEventLoopGroup();
        EventLoopGroup worker = new NioEventLoopGroup();

        //绑定端口
        ServerBootstrap bootstrap = new ServerBootstrap();
        bootstrap.group(boss, worker).channel(NioServerSocketChannel.class).childHandler(new ChannelInitializer<SocketChannel>() {
            @Override
            protected void initChannel(SocketChannel socketChannel) throws Exception {
                ChannelPipeline pipeline = socketChannel.pipeline();
                //添加http编码解码器
                pipeline.addLast(new HttpServerCodec())
                        //支持大数据流
                        .addLast(new ChunkedWriteHandler())
                        //对http消息做聚合操作，会产生FullHttpRequest、FullHttpResponse
                        .addLast(new HttpObjectAggregator(1024 * 64))
                        //websocket支持
                        .addLast(new WebSocketServerProtocolHandler("/")) //websocket的根路径
                        .addLast(new WebSocketHandler());

            }
        });

        bootstrap.bind(8888).sync();
    }
}
